At Indiana University, when dialing a phone call using the Skype for Business/LyncUniCom client or a USB or IP phone with UniCom Enterprise Voice, you can make a call without exposing your phone number to the other party's caller ID by dialing *67 before the 10-digit number. The caller ID of the other party will then display your number as (000) 555-0100.

When using *67, you must dial the 10-digit number for all calls, including on-campus calls that you might ordinarily be able to dial with fewer digits.

If you want to block your number from caller ID for all off-campus calls you make, email
Communications Planning and Implementation. Dialing *67 before the 10-digit number will always block your number from caller ID, even for UniCom to UniCom and on-campus calls.